The Irwin Pro Comfort screwdrivers have been designed for comfort, durability and safety. They feature a dual material, trilobular handle for an ergonomic grip and are made with Chrome Vanadium steel shafts with corrosion protection. The screwdrivers have a black phosphate, magnetic tip which helps to improve screw alignment, provides easy driving and extends the life of the tip. Specifications: Tip Size: TX27. Blade Length: 125mm.